CallbackContext: Add success method for boolean

[GitToTheHub]

• Add a helper method for success callbacks that returns Status.OK with a boolean
• It didn't exist a success method for a boolean result, but for JSONObject, JSONArray, String, byte[] and int

Platforms affected

Motivation and Context

During developing the plugin of cordova-plugin-local-notifications I noticed that the original author implemented a helper method for new PluginResult(PluginResult.Status.OK, success), but I wondered why success couldn't be directly called on CallbackContext.

Description

Testing

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.79%. Comparing base (655aa0a) to head (1a229e3).

Additional details and impacted files

@@ Coverage Diff @@ ## master #1864 +/- ## ======================================= Coverage 60.79% 60.79% ======================================= Files 23 23 Lines 4811 4811 ======================================= Hits 2925 2925 Misses 1886 1886 

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